Apparatus for raising dough



un wa@ R. L. EWING.

APPARATUS POR RAISING DOUGH.

(No Model.)

@Witwe/56e@ v UNITED STATES PATENT Oni-ICES RUFUS LINCOLN EWING, OFMGGLEARY, PENNSYLVANIA.

APPARATUS FOR RAISING DOUGH.

SPECIFICATION forming part of Letters Patent No. 367.201, dated JulyuZB,1887.

Application filed February 17, 1887. Serial No. 227,957. (No model.) A

To .aZZ whom it may @encerrar Be it known that I, RUE Us LINCOLN Ewrne,a citizenof the United States,residing at Mc- Cleary, in the county ofBeaver and State of Pennsylvania, have invented certain new and usefulImprovements in Apparatus for Raising Dough; and I d'o hereby declarethefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the aocompanying drawings,and letters of reference marked thereon, which form a part of thisspecification.

Like letters refer to the same parts throughout the several views.

My invention relates to that class of devices which are adapted for usein raising dough for bakers use 5 and it hasfor its object to generallyimprove upon apparatus of this class.

To this end, and to such others as the invention may relate, the .sameconsists in the peculiar combinations and in the novel construction,arrangement, and adaptation of parts, all as more fully hereinafterdescribed, shown in the drawings, and then sought to be particularlydelined in the claims.

In the accompanying drawings, Figure l is a cross-section through anoven constructed in accordance with my invention. Figs. 2 and 3 aredetail perspective views of the heaterdrum. Fig. 4 is a longitudinalsection of the heating-drum.

Referring to the drawings by letter, A represents a suitable cabinet orchest, formed of any suitable material, but preferably of twothicknesses of wood, with the grain of one thickness arranged at rightangles to the grain of the other. This greatly increases the strength,and to a considerable extent servesl to better retain the heat; but inorder to more effectually retain the heat I place between each twothicknessesof wood a layer of heavy felt, paper, or other non-conductorof heat.

Within the chest are arranged aseries of two or more removable racks orshelves, B, access to which is had through the doors C. In the lowerpart of the chest is arranged the heatingdrum D, the bottom of which isprovided with an aperture, a, to receive the chimney of the lamp, whichmay be of any approved construction and is placed upon the door beneathI the chest.

Upon the under side of the bottom of this drum I place the guide-stripsb, each guide-strip being provided with a flexible partition, b.

E E are dampers, each provided with a suitl able handle extendingthrough the side of the chest and having their adjacent ends cut away,

as shown, so as to tit around the chimney of 6J thelamp when-in place.These dampers are arranged to move in guides or ways formed in theguide-strips, the iiexible partitions of which allow of the dam persreadily overlapping each other, so as to effectu'ally close .theaperture in the bottom of the drum.

The top of the drum is made detachable in any well-known way, and isprovided with bolts c c, which pass from the top side thereof downwardthrough the drum and extend through the bottom thereof, their projectingends being provided with suitable nuts, c', by means of which the topcan be brought down tight, in order to overcomethe iiapping motion ofthe tin, which, if not obviated, will blow out the lamp when the doorsare being closed, the same being caused by the compression of the airwithin the chamber.

The under side of the top of the drum is provided with adeliector, F,which is permanently attached to the under side of the top of said drumin any suitable man ner. It consists,preferabl y, of a ourved'piece ofmetal,(ordinaril y This bar d` side of the top of the drum, the apex ofthe flange being arranged substantially in the center of the deflector,so that the heat striking the flange, and also that thrown from thedeiiector, will be conveyed to the outer corners of t-he drum, thusgiving a uniform heat throughout the whole drum. At the rear ofthe druma hole, e, is provided, which allows all gases and smoke to pass out,provides ventilation,

and causes a draft for the lamp.

Within the chamber or chest A, at any cony1 oo venient point, I arrangea thermometer, H,

extending through the top, the state of which will indicate the degreeof heat within the chamber. The top A ofthe chest A is designed 5 to beof a proper height to form atable suitable for use as a kneading orpastry board.

rIhe joints around the outside of the drum should be cemented orotherwise hermetically closed, so as to render them perfectly tight andprevent the escape of smoke or gas into the chamber above. In use thetray containing the dough is placed upon the lower rack and the doorsare closed. rIhelamp is then lighted and placed in position beneath thedrum,with ils chimney extending through the aperture in the bottomthereof, and when the required temperature has been secured and thedough has been raised to a proper consistency it is removed and workedinto loaves, which are placed within the bread-chamber. After the lampis removed the dampers are closed, and the heat is thus retained withinthe chamber. The bread is allowed to remain wit-hin the chamber until inreadiness for baking.

Having thus described my invention and set forth its merits, what Iclaim to be new, and desire to secure by Letters Patent, is-

1. The heating-drum provided upon the under side of its top with acurved defleetor and a V-shaped flange,witl1 its apex extending towardand substantially in the center of said deector, substantially as andfor the purpose specified.

2. The combinalion,with the drum provided with aperture a,ofguidestripsb,secured to the under side of said drum and provided with lexiblepartitions b,and theadjustable dampers E, working in ways formed by saidpartitions, one upon each side of said aperture,cut away at their innerends and arranged to overlap, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

RUFUS LINCOLN EWI NG.

Witnesses:

Crus. B. I-IUns'r, SMITH CURTIS.

